Die used in the manufacture of horseshoes



Jan. 1!

F. E. MERKLINGER ET; AL

0115s .USED IN THE MANUFACTURE OF HORSESHOES" Filed May 5, 1922 3 Shebts-Sheet '1 iwlkmn Jan. 1

F. E. MERKLINGER ET ,AL

DIES USED IN THE MANUFACTURE OF i oRSESHOES File y 5,. 192.2 s Sheets-Sheet 2 Jan. 1, 1924 1,479,728 F. E. MERKLINGER ET AL DIES USED IN THE MANUFACTURE OF HORSESHOES Filed May 5, 1922- 3 Sheets-Sheet 5 Patented Jan. 1, 1924.

FRANK E. MERKLINGER AND SAMUEL R.

PATENT OFFICEf.

LIMERICK, or PHILADELPHIA, rEnnsYL- VANIA, ASSIGNORS TO THE BALDWIN LOCOMOTIVE WORKS, OF PHILADELPHIA, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

DIE USED IN THE MANUFACTURE OF HORSESHOES.

Application filed May 5,

To all whom it may concern:

Be it known that we, FRANK E. MERKLIN- GER and SAMUEL R. LIMERICK, citizens of the United States, residing in Philadelphia, Pennsylvania, have invented certain Improvements in 'Dies Used in the Manufacture of Horseshoes, of which the following is a specification.

Our invention relates to certain improvenients in dies used for punching and straightening horse shoes, and for bending the toe clips of the shoes.

The object of our invention is to con struct the dies so that the above operations can be performed by one stroke of the press in which the dies are mounted. The invention also relates to certain improvements in details of construction, which will be fully described hereinafter, reference being had to the accompanying drawings, in which: Fig. 1 is a side view of upper and lower dies made in accordance with our invention and used in the manufacture of horse shoes; Fig. 2 is a transverse sectional view of the upper dieon the line 2-2, Fig. 8;

Fig. 3 is an inverted plan view of the upper die;

Fig. 1 is a plan view of the lower die;

Fig. 5 is a perspective view of a horse shoe formed by our improved dies; and

Fig. 6 is a view illustrating a modification of the invention.

In the present instance, the horse shoe (Fig. 5) has a body portion a, a recessed toe calk Z) at the forward end, and a series of heel calks 0 at the rear ends of the shoe. The recessed toe calk at the front of the shoe and the series of heel calks are formed by drop forging. The dies, which punch the holes 03 in the blank, turn down the toe clip 0, and straighten the blank, are made as follows:

1 is the lower die, recessed at 2 for the reception of a horse shoe blank. This die is shaped at 3 to receive the turned down toe clip and is perforated at 4 for the passage of the punchings cut from the blank by the punches of the upper die. placed in the recessed portion of the lower die and is centered by a plunger 5 carried by the upper die 6. The perforations 4, in the present instance, are in cylindrical blocks 7 detachably secured to the lower die by The blank is 1922. Serial N0. 558,574.

screws 8 so that they can be replaced when injured.

Secured to the forward end of the upper die 6 by bolts 11 is a bearing 10 having a r I spindle 10 on which is a roller 9for bending the toe clip of a shoe. The plunger 5 is adapted to a cylindrical recess 15 in the upper die and is flanged at 16. The under side 'of the plunger is recessed at 12 and 13 for the reception of the calks b and c of the horse shoe blank. In the flange 16 of the plunger are passages 14 through which the punches 27 extend, which punch the nail holes d in the shoe b1ank. These punches 27 are located in sockets in the upper die and are held therein by screws 26.

17 are bolts, which extend through the openings in the upper die and have reduced, threaded ends 18 that are screwed into threaded openings in the plunger 5. The

and 23 hold the plunger in the projected position so that, when the upper die is moved towards the lower die, theplunger, 5*will' center the hot shoe blank on the lower:die and will hold the blank in position.

While the punches, -which are carried by I the upper die, pass through openings 14 in the flange 16 of the plunger and punch the nail holes 0? in the blank, the punchings are forced through the openings 4 in the lower die. When the. upper die recedes, the punches are carried with it, but the springs expand and retain the plunger 5 on the blank. The pressure of the springs straightens the blank and, when the head and the upper die are raised to the full extent, the plunger 5 is withdrawn and the finished horse shoe can be removed from the dies. r

While a nest of four springs is shown and four bolts, it will be understood that the number of springs may be reduced, and, in some instances, a single heavy spring, similar to the spring 23, may be located between the upper die and the plunger, and a heavy single bolt may be substituted for the bolts illustrated. V v

In Fig. 6 is illustrated a modification of the means for operating the plunger in place of the springs. The plunger 5 is provided with suitable packing rings and in the recess in the upper die-is a cylinder connected by a pipe to any fluid pressure ously, and the shoe'is straightened by the pressure of the springs before'the upper die completes its return movement.

We claim 1. The combination in dies used in the manufacture of horse shoes,'of a lower die on which the horse shoe blank is mounted; an upper die; punches carried by the upper die for punching nail holes in the blank; a plunger arranged to bear against the blank While the punches are forced therethrough, the plunger stripping the punches as they are returned; and means for resiliently holding the plunger, the pressure on the plunger in engagement with said blank during said stripping operation being suflicient to straighten the hot blank after the punches have been withdrawn from the blank.

2. The combination of a lower die having a recess to receive a horse shoe blank; a spring-pressed plunger arranged to clamp the blank to the lower die; punches-on each .side of the upper die for simultaneously punching all of thenail holesin the blank; and a roller carried by the upper die, said roller being arranged to bend a toe clip into final position as the die is punching the holes.

3. The combination of a lower die arranged toreceive a horseshoe blank; an upper die; a series of punches carried by the upper die and arranged to punch nail holes in the blank; a roller, also carried by the upper die, for bending a toe clip into final position; a plunger mounted in the upper die and arranged to bear upon the blank; bolts attached to the plunger and arranged to move freely in the upper die; and springs surrounding the bolts, said springs tending to force the plunger onto the blank WltllSLlCll pressure as to straighten the blank after the nail holes have been punched.

4. The combination of a lower die shaped to receive a horse shoe blank; a head; an upper die thereon; punches carried by the upper die for punching holes in the blank, the lower die having perforations through which the punchingsare projected; a roller for bending a toe clip, said roller being mounted in a bearing secured to the upper die; a flanged plunger mounted in the upperdie and shaped to conform to the blank, the flange of the plunger having passages through which the punches pass; bolts loosely connecting the plate to the upper die; springs surrounding the bolts; and springs on the outside of the upper (he, said springsbeing located between the flange ofthe plunger and the head, the springs acting to hold the plate to the blank while the blank is being punched and to straighten the blank after the punching operation.

5. The combination in dies used in the manufacture of horse shoes, of a lower die recessed to receive the blank and havlng an' edge over whlch the toe clip 1s bent; :an.

upper die; a plunger therein, said plunger being shaped to conform to the shape of the blank of the shoe and to hold and center the blank on the lower die during the punching operation; means for creating a pressure on said plunger and tostraighten the shoe; punches, carried by the upper die,

arranged to' project through passages in the. plunger; and a roller, also earned by the upper dle, arranged to bend a toe clip down 

